Improvement in coverings for steam-boilers



E. A. HAYES. Coverings for Steam-Boilers.

Pa1enfedJu|y-23,1s7s.

. INVENTOR ATTORNEYS lllYWlN A. HAY CS, VOF NEV YORK, Y.

VllViPROiVrEMENT IN COVERINGS FOR STEAM-EGILERS.

Speeilieatiun forming part. of Letters Patent No. 206,236, dated July .'23, lfTR; application tiled June 4, 1872?.

To all -zrlzom 'it may concern:

Be it known that I, EDWIN A. llAYns,`of the city, county, and State of N ew York, have invented a new and useful Improvement in Covering for Steam-Boilers, of which the following is a specification:

My inventionyrelates to a covering of felt or other fabric applied to the exterior surfaces of steam-boilers and various parts of steamengines for the purpose of protecting them from cold and preventing condensation of steam.

Heretofore felt and other fabrics have been applied directly to the surface of the boiler or other part, and have in time adhered closely thereto, so as to prevent removal of the fabric without tearing it and rendering it useless. ln order to inspect the boiler itis necessary to remove the felt, and, as the removal renders it worthless, a new covering must be applied every year, or as often as the boiler is inspected.

The principal object of my invention is to provide means for using the covering aga-in after it has been removed from the boiler.

The accompanying drawing illustrates the manner 0f carrying out my invention.

Figure l is a view, partly in transverse scction, of a boiler and dome with my improved easing applied thereto. Fig. 2 is an end View ot' the same. Fig. 3 isI a view of the inner surface of the casing. Fig. et is a section taken in the line x a' of Fig. 3. Fig. 5 is a section taken in the line y y of Fig. 3.

Similar letters ot reference indicate corresponding parts.

A represents a boiler, and B a dome, of any ordinary description. C represents a strip ot' metal having' corrugations c, of U sha-pe or approximate form, and of a depth equal to the thickness of thespace which it is desired to preserve between the felt and the surface of the boiler or other part to be covered. D represents 'the felt, which may be of any suitable description, and'to which the eorru gated strips (j are attached byrivets d. Erepresents a layer of duck, ca'nvas, or other suitable fabric, attachedto the felt by sewing it thereto, the stitches being represented at j' in Fig. 5. G E represent, respectively, hooks and eyes on the edges of the contiguous sections ofthe easingffor the purpose of connecting the sec- Aplace on the boiler.

stitched to the felt and the edges provided with hooks and eyes, straps and buckles, or

other suitable fastenings, the section is then complete. The sections may be of any desired shape and dimensions. They may be in strips long enough to passentirely around the boiler,

or from top to `bottoni of an upright boiler orv dome,

or they may bc of, square or oblong shape,

and arranged to break joints when in Each section has the woven fabric arranged to overhang the felt on one or more of its sides after the manner of a flap. The sections, constructed as described, are connected together by the hooks and eyes or other fastenings to kform the casing. When so connected the contiguous edges ot' the felt tit closely against each.- other and the flaps cover the joints, and thereby form a practical] y air-tight casing. The 'canvas or other woven fabric protects the outside of the felt. A

The edges of sections which form the tel niinations of a casing-as, for example, atthe end of a boiler or the top of a domeare provided with eyes H for the reception of the wire J. Vhen the easing is vin place on the .boiler and the boiler has steam. on, the. wire is contracted so as to draw the edge of the casing close to the surface of the boiler, as before described, and as shown clearly in F 'g. l. `When steainis not on, the wire may be loosened so as to admit air under the casing for the purpose of cooling off and preventing the iron from sweating.

The metallic strips (l 'may be arranged to cross each otherin the form of network, if desired.

'Vhen the boiler is to be inspected, or when for any reason access to the surface of the boiler is desired, either the whole or any part 2 nomefile y ofthe easing may be readily removed by disengaging the hooks and eye/S or other fasten ings, whereupon any de$ired number of See' l. ln ahoiler-eovering, the eoinbinaiion oi the corrugated strips C, felt D, and ennvasE, the Sections being connected by noolis and oyes, as shown and deseril'ied.

2. in ooi'n'binz'ition with aeasing eonsrneted as described, ewire, J, arranged shown and described, for the purpose speeied.

RNTN A. HAYES.

'iinessem 

